ANNELIDS. 67 



verse wrinkles. The cephalic lobe is short and apparently broadly 

 truncate in front, the margin being slightly revolute, and bearing on its 

 anterior surface, in a semicircular group, very numerous long tanalicu- 

 late tentacles, and on its posterior margin there are numerous minute, 

 inconspicuous, blackish ocelli, forming a crowded row or band on each 

 side ; these ocelli are much smaller than in Thelepus cincmnatus of our 

 coast. The upper lip is broad, somewhat cucullate, and is produced 

 forward; in a front view it forms about two-thirds of a circle. The 

 lower lip is crescent-shaped and less prominent. The branchiae are 

 slender, cirriform, much curled, and very numerous, forming trans- 

 versely elongated groups on the second, third, and fourth segments; 

 the most anterior group being considerably the largest, and extending 

 down on the sides below the level of the setigerous tubercles of the 

 succeeding segments ; the third cluster of branchiae is smaller than the 

 second. 



Length of alcoholic specimens, 150°»™ and upward ; diameter, 6™°* 

 to 8™™ ; some of the empty tubes indicate still larger specimens. 



The tubes are large and crooked, composed of a tough, thin, translu- 

 cent, parchment-like lining, to which are firmly and closely cemented 

 coarse grains and small pebbles of black volcanic rock, covering the 

 whole surface, except on the upright terminal portion, which is usually 

 coated with fragments of algse, mixed with sand. The tubes were at- 

 tached to stones and pebbles. 



Kerguelen Island, twelve fathoms, with roots of Macrocystis pyri- 

 /era ; Dr. J. H. Kidder. 



An allied species has been described from the Falkland Islands by 

 Dr. W. Baird as Terebella bilineata, but he states that it has 36 segments, 

 with fascicles of setae, which extend to the posterior end ; but it is quite 

 probable that his specimen had lost the posterior segments and really 

 belongs to Neottis, with which it agrees in the character of the branchiae. 



Spikorbis, species undetermined. 



The tubes of a species of Spirorbis, having three or four rather slender 

 whorls, either coiled nearly in one plane, or with the part near the aper- 

 ture turned upward, smooth, or with slight tranverse wrinkles, occurred 

 attached to the tubes of the preceding species, and on algae. 



Without the animal, it is impossible to identify with certainty the 

 species of this genus. 



